On 2010-06-28, at 10:26, David Howells wrote: > Make the file creation time, inode data version number and inode generation > number available on Ext4 by as xattrs named: > > file.crtime > file.i_generation > file.i_version (directories only for ext4) Some minor nits: - I'd prefer calling these "file.generation" and "file.version". I don't think there is value in the "i_" prefix adds anything, and it seems more like an internal detail to me - why not expose the ".version" field for regular files? It seems that all of them are applicable for all file types. - it would be good to not introduce a new xattr namespace, since tools like tar (even the RHEL-patched one) will not backup and restore these namespaces. Using "trusted." would allow them to be backed up and restored using existing xattr-patched GNU tar by root, but wouldn't allow them to be modified by regular users. I think this is important for proper backup/restore of a filesystem, but can have correctness implications and shouldn't be accessible to regular users. > file.crtime=0x53ba244c000000000000000000000000 Is this a binary (host-endian) struct timespec? > file.i_generation=0x0000000000000000 This seems odd, i_generation should never be zero, AFAIK. Cheers, Andreas -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
